'Behind' in the Bible

Are they not beyond the Jordan, behind the way of the going down of the sun, in the land of the Canaanites that dwell in the Arabah, over against Gilgal, beside the oaks of Moreh?

how he met thee by the way, and smote the hindmost of thee, all that were feeble behind thee, when thou wast faint and weary; and he feared not God.